O. NORDGÅRD fl922 



Polypus lentus Verrill. 

 Octopus lentus Verrill, 1881, p. 375—377, pl. 35, fig. 1, 2, pl. 51, fig. 2. 



— — Appelløf, 1892, p. 4. 



In the surface papillæ of P. arcticus there is quite a considerable 

 variation, and when on July 18th 1913 between Trondhjem and 

 Tautra from a depth of ca. 300 m., muddy bottom, I dredged a spe- 

 cimen without papillæ but with a small conical cirrus above each 

 eye, I thought it might be a variation of P. arcticus. Upon a closer 

 examination the indentity with Verrill's P. lentus seemed to be 

 evident. The specimen was a female, total length from end of bodj'^ 

 to the tip of dorsal arms was 130 mm. Length of body to the ven- 

 tral edge of mantle 34 mm. In all essentials there was agreement 

 with Verrill's description (1881, p. 375 — 377) and figures, but the 

 marginal membrane was little apparent. Appelløf records a male 

 specimen of this species from the Norw. North. Atl. Exp. st. 124 

 (66°6r N., 6°59' E). Also in this specimen there was «eine auser- 

 ordentlich schwache Andeutung zu einer Hautleiste am Hinterende 

 des Korpers». The depth at st. 124 was 640 m., temp — 0.9 C°. This 

 circumstance points to the possibility of P. lentus being an arctic 

 species. Friele and GrieCx state (1901, p. 123) that a specimen of 

 the same species has once been tåken in the Bergen Fjord. 



Eledone cirrosa Lamarck. 



Eledone cirrhosus Forbes and Hanley, 1858, vol. 4, p. 211, vol 1, pl. 

 K K K, fig. 4, and M M M, fig. 1. 



— cirrosa Lønnberg, 1891, p. 8. 



In V. Storm's collections in the Trondhjem museum there are 

 2 specimens of Eledone, the one marked Trondhjem Fjord, 1877, 

 is called E. moschata Lamarck, the other marked Trondhjem, 

 Sept. 1899, is labelled E. cirrosa Lamarck. I can not find any es- 

 sential difference between the 2 specimens and conclude that both 

 are E. cirrosa. It is not very probable that E. moschata lives in 

 Norwegian waters. It is a Mediterranean species which has not to 

 this time been recorded from British coasts. But E. cirrosa I have 

 seen from several localities in the Trondhjem Fjord, viz. V^ 1911. 

 Between Inneroy and Ytteroy, 40 — 70 m., 2 specimens; 7" 1909. E. oi 

 Munkholmen, 1 specimen; ^7* 1912, In the harbour-channel ai 

 Trondilijem, 1 small specimen. In the later years it has been evident 

 that this species also occurs on the coast north of the Trondhjem 

 Fjord. ^°lio 1911 I saw a specimen from Stoksund (64° N.), and in 

 May 1916 Mr. Edward Havnø sent me a specimen from Rodøy 

 (66° — 67° N.). Length from end of body to ventral edge of mantle, 

 65 nmi. Thus E. cirrosa has passed the Arctic Circle. Perhaps 

 Zoologists in future may state its occurence at the Lofoten Islands. 

 To the South the distribution extends to Spain, Portugal and the 

 Mediterranean. In Locard's general catalogue of French mollusks 



